Abstract: Aim To study and realize the key technology in tank and cannon simulation software,viz a part of immersion virtual reality Methods To develop real time,interactive 3D graphics software with OpenGL and Visual C ++ Results Editing and navigation of 3D scene is realized Some display effects that can improve the reality of the scene are implemented,such as lighting,texture,antialiasing,fog and so on The software uses the keyboard to accomplish interactive control Conclusion This software is a part of immersion VR system,and can servea the base of future development